While filming on set at an abandoned lighthouse, real zombies appeared and snatched Romero away. The four actors teamed up and fended off against the undead. Romero later resurfaced, as a half-zombie. While fighting, the four celebrities encountered Tank Dempsey, Nikolai Belinski, Takeo Masaki, and Edward Richtofen, who were mistakenly teleported into a room inside the lighthouse. Gellar and the rest of the celebrities helped Richtofen retrieve a golden rod. Afterwards, Richtofen and the other three teleported to Shangri-La, leaving behind the Wunderwaffe DG-2 for the celebrities.

In the Call of Duty: Black Ops IIImap, Revelations, it is revealed through Sally, George Romero's assistant, that Gellar, along with the rest of the Call of the Dead cast and crew, had gone missing for six weeks since the events that took place, their whereabouts and status remain unknown to the rest of the world.